Crusher jaw-plate.



W. S. MCKEE 6L F. E. JOHNSON. n

cRusHEn JAW PLATE'. APELlcATloN HLED'FEB. 25. 191e.

1,187,163. Patenteame 13, 1916.

'ran sfraff f FFTQE,

WALTER S. McKl-EE, OF CHICAGO, ILLINOIS, ANI) FRANK E. JOHNSON, OF SALT LAKE CITY, UTAH, ASSIGNORS, BY MESN'E ASSIGNMENTS, TO yAMERICAN MANGANESE STEEL COMPANY, 0F AUGUSTA, -MAINE, `A CORPORATION OF MAINE.

CRUSHER JAW-PLATE.

Specification of Letters Patent.

Patented June 13, 1916.

Original `application filed IJanuary '25, 19].5, Serial No. 4,08'8. 'Divided and this application filed February i 26, '1916. Seri-12.11F@ 80,564.

To all 'whom t may concern:

Be it known that we, WALTER S. MGKEE, a citizen lof the United States, and a :residentof'Chicago, inthe county of Cook and provements in -CrusherfJaw-Pl'ates, of which the following 'is a specification. Y

This invention vrelates 'to ysectional crusher jaw plates, fthe obj-ect being to so construct Ithe several lsections that :they may be so locked together 'as to vpossess jthe rigidity and strength of an integral feasting.

This application is a vdivision of our .copending application Ser. No. 4088, led 'January 25, 11915.

The lowermost portion of a crusher jaw 'late 'is subject fto fthe most rapid wear, and, or this reason, it is of advantage 4to form the crusher jaw plate in sections. While it is important that the sections may be easily and conveniently removed, it is also essential that the various sections be held in rigid aflinement and `one 'section prevented from moving in front or to the side lof adjacent sections.

With this in view we have provided the ends of leach section with lir'i'teriitting members, whereby each section is adapted to 'engage and become 'locked to the adjacent sections, it being among 'the objects lof the present invention to accomplish the 'above-mentioned ends in a simple, practical and eX- peditious manner.

Other objects and advantages will ,appear fas the description proceeds, wherein it is to be noted "that vchan-ges inthe precise embodiment Iof our invention can be made within l:the 1scope of what -i's claimed, without deofl the. flower section `being broken away; Fig. 2 isla view '1n ysldeelevation of the foregoing, parts thereof being' represented in. section; Fig. V3 1s 'a view `1n horizontal section, taken on the iline 3--3 of Fig. V2; Fig. 4 l1s' a view 1n perspective of one section' of the jaw plate; Fig. 5 is a view in side elevation thereof, illustrating the -manner in modified form yof jaw plate, the modi'cation residing in the connection between the several sections; Fig. 8 `is a view in front elevation and partially in section of a further modified form l'of the jaw plate, which is illustrated in side elevation in Fig. 9; Figs. l0 and 1l are views in front and side elevation respectively, of a further modified form of connection between-the sections of a jaw plate; and Figsl?, and 13 are views in front and side elevation of a still different form -o-f connection for the several sections.

.verse sections 10, 11 and 12, and atop wedgeshaped section 18; the several sections 10, l1 and .12 being identical', are interchangeable, so that the lowermost section, which lis subjected to the lgreatest and most rapid wear, may be discarded after becoming worn beyond use, and the next section thereabove moved downwardly, so as to occupy the position -of the discarded section. The formation of the .jaw plate in sections renders necessary the secure locking of the several sections together, so as to maintain the various ribs and corrugations of the wearing faces in fixed and proper relation, and to also prevent one section from moving in front of the adjacent sections. With this in view, we have provided the lower and beveled end 14; of each section with a downwardly projecting lip 15. This lip extends entirely across the lower end of each section and enlarges at its lower extremity to form a rib 16, the Onewall 17 of which is undercut or y beveled, corresponding to the bevel of the end 14 of the section. The lower wall 18 of the rib extends substantially perpendicular to the plane of the back of the section. 'Ihe upper end of each section is provided with a recess, corresponding to the outline of the lip 15 and rib 16. The various sections are assembled in their jaw plate forming relation by moving one section transversely to the adjacent section and sliding the lip into the recessof the sub-adjacent section. The connection between the several sections thus positively locks them together except in a transverse direction, and to prevent this movement a beveled key 19 is secured within suitable undercut slots 20, which extend along the back of the several sections, and which aline when the sections are in proper place. The lowermost section must fit snugly within the jaw (not shown) of the crushing machine, and, for this reason, it is necessary that the protruding lip 15 of the lowermost section be removed. In order that this may be conveniently accomplished, each section is provided with a transversely extending` notch 21, located at the innermost extremity of the lip thereby allowing the lip to be broken away at the proper point for its complete removal. Y

The crusher jaw plate, illustrated in Fig. 6,-is similar to the foregoing, with the exception that the lips 15 project upwardly from the upper end of each section, and the corresponding recesses 18 are formed along the lower end of each section, thus doing away with the necessity of breaking o the lip of the lowermost section before it can be assembled in the crushing machine.

In those instances where it is impracticable to assemble the several sections, of the crusher jaw plate, by relative transverse movement, the form of interlocking lips and recesses, illustrated in Fig. 7, are employed. In this type of lip and recess, the lowermost wall 18 thereof extends substantially parallel to the inner and undercut wall 17 of the lip and parallel lower end 14 of the section. In this type of jaw plate the several sections are assembled directly one upon the other ment may be modified, as illustrated in Figs. 10 and 11, wherein the lips and recesses are of limited length and are located at the outer edges of the several sections, or may be formed at the center of the several sections, as illustrated in Figs. 12 and 13, the locking key in these instances being omitted if desired.

A somewhat simpler connection between the several sections is disclosed in Figs. 8 and 9, wherein the lips 25 and recesses 26 partake of the form of the ordinary tongue and groove, and, owing to the fact that the lip 25 is substantially equal in thiclmess to that of the locking key 27, they do not extend entirely across the back but only up to the sides of the locking key.

rIhe rigid and positive securement between the several sections of the various jaw plates, as above described, prevents the ribs and corrugationsof the wearing face from moving out of proper relation as well as holding the sections from moving one in front of the other. The crusher jaw plate, although formed of replaceable sections, possesses the characteristics of an integral casting and may be conveniently handled and transported, as well as easily and quickly secured in place in the jaw of a crushing machine and readily removed therefrom, this latter feature providing for the convenient replacement of a worn section.

What we claim is l. A crusher jaw plate formed of a plurality of sections, and interlocking means extending along the ends of said sections holding them against lengthwise separation and against movement one in front of the other.

2. A crusher jaw plate formed of a plurality of sections, said sections provided along their upper and lower ends with similarly shaped projecting lips and recesses, said lips and recesses adapted to interlock and hold said sections against lengthwise separation.

3. A crusher jaw plate formed of a plurality of interchangeable sections, said sections being provided along their upper and lower ends with similarly shaped, projecting lips and recesses, and a locking member extending longitudinally of said plate, holding the several sections against transverse movement.

4. A crusher jaw plate comprising a plurality of interchangeable wearing sections with the upper and lower ends thereof provided with interlocking similarly shaped projecting lips and recesses, said sections -provided with alined undercut recesses and a beveled key fitting within said alined recesses and extending longitudinally of said jaw plate and in connection with said lips and first-mentioned recesses, holding the and State of Illinois, this 23 day of Februseveral sections in fixed relation. ary, 1916.

5. A Crusher jaw plate formed of a plu- WALTER S. MCKEE. rality of sections, interengaging means eX- Vitnesses: tending along the ends of said sections hold- NELLIE C. BAsoN, ing them in proper position, and a looking EUGENE C. BAUER. member extending longitudinally of said FRANK E. JOHNSON. sections, holding them against transverse Witnesses: movement. JAMES F. REDDING,

Signed at Chicago, in the county of Cook M. FIELD.

Copiel of this patent may be obtained for ve cents each, by addressing the Commlsioner of Patents. Washington, D. C. 

